Error message not a valid win32

I have been trying to download programs for a long time now and I cannot download anything whatsoever no matter what it is even microsoft own applications cannot be downloaded.
this has been terrorizing me for some time now, I have tried to do many things to correct this but nothing,
My help and support was disabled so I thought it might be that but it was not, I tried sfc/scannow
that did not work either, so I have to come to you for advice, please tell me how to correct this error I am not a pro just ok on the computer knowledge.
Thanks
p.s its not a virus, I have many cleaners and I run then from time to time.

I would 'guess' that there is a problem with the Windows Installer. One way we can get more information is to look for an Error that corresponds to this message in the Event Viewer:

Start> Run> type in eventvwr

Do this on each the System and the Applications logs:
1. Click to open the log>
2. Look for the Error>
3 .Right click on the Error> Properties>
4. Click on Copy button, top right, below the down arrow
5. Paste here (Ctrl V)

Click to expand...

Notes: Please ignore Warnings and Information Events. You do not need to include the lines of code-if any-in the box below the Description. Please do not paste the entire Event Log.

Event Type: Error
Event Source: WindowsLiveMessenger
Event Category: None
Event ID: 7
Date: 12/25/2008
Time: 7:38:08 AM
User: N/A
Computer: HP11502300782
Description:
The description for Event ID ( 7 ) in Source ( WindowsLiveMessenger ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: WindowsLiveMessenger, 0.0.0.0, 0.0.0.0, 3229, 10049.

For the hanging application, divx player.exe, take it off of the Startup menu.
Start> Run> msconfig> enter> Selective Startup> Startup tab> UNCHECK any processes related to the DiVXPlayer> Apply> OK> Reboot***

***NOTE: when you reboot you will get a nag message that you can ignore and close after checking 'don't show this message again.' Stay in Selective Startup.

Thanks CCT- I agree and would be more comfortable with seeing the results of running Malwarebytes, SuperAntispyware and HijackThis:

thfmgirl, quite a lot of people run the program and forgot to check to remove the malware-or require a more specialized program to clean. The only way we can validate that is to see the logs.http://www.techspot.com/vb/topic58138.html

no I have spybot, ad aware, ccleaner, see I clean my machine regularly.
too many to miss something with one.
well at least I think.
This happened when I deleted a folder months ago call i386 or a number close to that and another folder called svc host, and one I cannot remember, but it must have been registry keys.

IF there is no executable by that name in C:\Windows\System32, copy one that does show (probably at least 2 other locations even if you deleted the i386 folder) and paste it into the C:\Windows\System32 folder.

A system restore would actually be better, if you have any restore points.